This paper considers a labor market employers differ in productivity, which is private information, and face hiring costs. Each employer sets its current wage but does not commit to future wages. Workers search on the job for better paid employment. A signalling equilibrium is show to exist and...

A rich but tractable variant of the Burdett-Mortensen model of wage setting behavior is formulated and a dynamic market equilibrium solution to the model is defined and characterized. In the model, firms cannot commit to wage contracts. Instead, the Markov perfect equilibrium to the wage setting...